Get one of the first Warrior path skills. This is unlocked at level 6 or 7 by spending points into the Witcher path. The Warrior skill allows you to dodge further distances. Level 1 is 100% and level 2 is 200%. Take out Geralt's sword and begin rolling when in a wide open area or deserted portion of a city. You will be able to travel faster than normal. If timed precisely you can roll without pausing between rolls. Note: Having your sword out will draw the attention of the guards.